rob, i have recently done a 292 turbo and here are the specs from my cam. cam is custom ground by comp for a turbo setup. the specs are .521/.512 int/exh, duration @.50 are 218 int/ 212 exh, lobe separation 114 cam # is C62 5432/5211 H 114. for the 250 you may want to take a little duration out. also keep in mind my part # is for a 292, fuel pump is in a different location. i run a stock torque converter and it works just fine. the cam idles very smooth and has awesome torque. what kind of a hookup will you use for the turbo? a manifold or a header? carbed or fuel injected? will you use a intercooler? what chassis is it going into also. tom
